1. Department of Oncology, The Affiliated Provincial Hospital, Anhui Medical University, Hefei, PR China,
2. The Comprehensive Cancer Center of Drum Tower Hospital, Medical School of Nanjing University and Clinical Cancer Institute of Nanjing University, Nanjing, PR China,
3. Respiratory Medicine, The Affiliated Provincial Hospital, Anhui Medical University, Hefei, PR China, and
4. Drum Tower Clinical Medical College of Nanjing Medical University, Nanjing, PR China